Was our moon made by Earth colliding with its neighbor?

A collision between Earth and a massive Mars-sized protoplanet likely caused the formation of our moon. Now scientists from the Max Planck Institute suggest that doomed planet was likely a rowdy neighbor.

source https://www.dw.com/en/was-our-moon-made-by-earth-colliding-with-its-neighbor/a-74819362?maca=en-rss-en-ger-1023-rdf